Discount Calculator
Calculate the final price, percentage savings, and discount amounts instantly as you type.
Example: 20% off ₹1,000 = ₹800 (You save ₹200)
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How to Calculate Sale Price & Savings
What is a discount calculator?
A discount calculator is a simple online tool designed to quickly compute the final price of an item after applying a percentage-based markdown, coupon code, or promotional discount. It is particularly useful during sales events, retail shopping trips, and financial planning, helping you determine exactly how much you save and what you will pay at checkout.
How do you calculate a discount?
Calculating a discount is a two-step process:
- Determine the savings: Multiply the original price by the discount rate (expressed as a decimal).
Savings Amount = Original Price × (Discount Percentage ÷ 100) - Calculate the sale price: Subtract the savings amount from the original price.
Final Sale Price = Original Price − Savings Amount
Common retail discount examples
- 10% Off: Take off one-tenth of the price. (e.g., 10% off a $120 jacket saves you $12, leaving a final price of $108).
- 20% Off: Double the value of 10% off. (e.g., 20% off $80 saves you $16, resulting in a $64 sale price).
- 25% Off: Pay exactly three-quarters of the original price (e.g., 25% off $100 saves you $25).
- 50% Off: Cut the price exactly in half.
The Math Behind Stacked Discounts
Premise: When retailers offer an "additional 20% off" on an item already marked down by 30%, many shoppers assume they are receiving a 50% total discount. This is a mathematical fallacy.
Evidence: If a $100 item is 30% off, its new price is $70. If you take an additional 20% off the new ticketed price, you are subtracting 20% of $70 (which is $14). The final sale price is $56. A true 50% discount would result in a $50 final price.
Conclusion: Stacked discounts are applied sequentially, not cumulatively. You must always calculate the first discount to find the subtotal, and then apply the second percentage to that lower subtotal to determine your actual savings.